;;; Lisparuga
;;; Copyright © 2020 David Thompson <dthompson2@worcester.edu>
;;;
;;; Lisparuga is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published
;;; by the Free Software Foundation, either version 3 of the License,
;;; or (at your option) any later version.
;;;
;;; Lisparuga is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Lisparuga.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:
;;
;; Game container.  Handles all the state, logic, and rendering for
;; the game itself.
;;
;;; Code:

(define-module (lisparuga game)
  #:use-module (chickadee math rect)
  #:use-module (chickadee math vector)
  #:use-module (chickadee render color)
  #:use-module (chickadee render texture)
  #:use-module (lisparuga asset)
  #:use-module (lisparuga bullets)
  #:use-module (lisparuga config)
  #:use-module (lisparuga node)
  #:use-module (lisparuga node-2d)
  #:use-module (lisparuga player)
  #:use-module (oop goops)
  #:export (<game>
            steer-player
            start-player-shooting
            stop-player-shooting
            toggle-player-polarity
            fire-player-homing-missiles))

(define-asset clouds (load-image (scope-asset "images/clouds.png")))
(define-asset player-bullet-atlas
  (load-tile-atlas (scope-asset "images/player-bullets.png") 16 16))

;; nodes needed:
;; enemies
;; enemy bullets
;; scrolling background
(define-class <game> (<node-2d>))

(define-method (on-boot (game <game>))
  (let* ((player-bullets (make <bullet-field>
                           #:capacity 500
                           #:texture-atlas player-bullet-atlas))
         (player (make-player player-bullets))
         (enemy-bullets (make <bullet-field>
                          #:capacity 1000
                          #:texture-atlas player-bullet-atlas)))
    (attach-to game
               (make <sprite>
                 #:name 'clouds
                 #:texture clouds)
               player
               player-bullets
               enemy-bullets)))

(define-method (steer-player (game <game>) up? down? left? right?)
  (steer (& game player) up? down? left? right?))

(define-method (start-player-shooting (game <game>))
  (start-shooting (& game player)))

(define-method (stop-player-shooting (game <game>))
  (stop-shooting (& game player)))

(define-method (toggle-player-polarity (game <game>))
  (toggle-polarity (& game player)))

(define-method (fire-player-homing-missiles (game <game>))
  (fire-homing-missiles (& game player)))